height,weight = eval(input('请输入身高(米)和体重(公斤)[中间用英文输入法的逗号隔开]'))
BMI = weight / height**2
print('您的BMI指数为',BMI)
if BMI < 18.5 :
    dom = who = '偏瘦'
elif BMI <= 24 :
    dom = who = '正常'
elif BMI <= 25 :
    who = '正常'
    dom = '偏胖'
elif BMI <= 28 :
    dom = who = '偏胖'
elif BMI <= 30 :
    who = '偏胖'
    dom = '肥胖'
else :
    who = dom = '肥胖'
print(f'BMI指标为：国际 :{who},国内：{dom}')